Improvement in water-filters



J; .T. LAWLER.

, WATER-FILTERS.

No. 194,692, Ptented Aug'.28,18177 NVENTEJFQI N PETERS,PHOTOLITHOGRIFHER. WASHINGTON, D

UNITED STATES PATENT OFFICE.

JAMES J. LAWLER, OF\ SCRANTON, BENNSYLVANA.

IMPROVEMENT IN'WATER-FILTER-S.

Speciti cation forming part of Letters Patent No. 194,(592, dated August25, 1877; application filed July 20, 1877.

To ai! whom 'it may cowc 'u: i

Be it known that I, JAMES J. LAWLER, of Scranton, in the county ot'Luzerne and State of lr'ennsylvania, have invented certain new anduseful Improvements in Combined Filter and Strainer; and I do herebydeelare that the following is a full, clear,-and exact descriptionthereof', which will enable others skilled in the art to which itappertains to make and use the same.

Th-is invention rela-tes to certain improvements in combined waterfilters and straiuers; and the invetion consists in the specialconstruction and arrangement of parts, which will be hereinafter morefully set forth.

In order to enable others skilled in the art to which my inventionappertains to make, construct, and use the same, I will now proceed todescribe its construction, arrangement,

and operation, reference being had to the ac- `companying drawings,which form a part of this specification, and iu which Figure l is a planview. Fig. 2 is a central vertical section. Big. 3 is a View with thetop of the strainer removed, showing the wirecloth and its pert'oratedsupporting-plate ben eath. Fig. 4 shows the device for holding thestrainer. This strainer, when the two sections A and B are connectedtogether. is nearly round. The section A is provided with a collar, U,serrated on the outside, and provided with screw-thread on the inside.The section B is knurled at a as shown, and provided at the top with ascrew thread, This section is screwed up inside the collar U of thesection A, forming an air-tight joint. In the section B, near the top,is placed a concave perforated plate, D, and on the top of=this plate isplaced wire-cloth E, made concave so as to lic flat or rest on saidplate. They are both soldered at their edges to the member B, to preventany displacement.

By this construction more straining-surface is provided, which is veryessential in order to allow a compact and steady flow from the nozzle.

The perforated plate supports the wire-cloth, giving it a solidhearing-surface, and at the same time allowing the free passage of thefluid. l

When the strainer is to be attached to a hydrant, it is provided with asponge, F, about one-fourth larger than the space on the inside, to actas a filter. By having the sponge larger than the space inside it is,when the two sec tions are screwed together, compressed, therebycatching more sedinent and checking the force of the 'water so as toprevent small worns from being washed through the wire cloth.

This strainer may also be used for straining nilk, cotl'ee, and otherheavy or hodied fluids. In this case the sponge F is removed and aholder or handle, G, used, as shown in Fig. 1,

of drawings, for holding the strainer. i

The manner in which the sections A and B are connected together preventsany leakage;`

but if such should occur by reason ot' the two sections not beingtightly connected. the water will follow down the sides and fall from ithe nozzle with the strained fluid.

Having thus tully described my in vention, what I claim as new, anddesire to secure by Letters Patent, is

A globe filter, the case of which is in' two equal separahle sections, AB, adapted to contain a single mass of filtering material resting upon aconcave base consisting of a perforated plate and Wire-gauze, D E, saidsegmental base being of larger diameter than the case, substantially asshown and described.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

JAMES JOSEPH LAWLER.

Witnesses:

JAS. H. TORREY, A. HARRIS.

